Marshall JCM900 1960A Lead Series 4 x 12 inch speakercabinet. Impendance switchable: Mono 4 and 16 Ohms, Stereo 2 x 8 Ohms. Some tolex damage from use. Technically perfect. Specs: Speaker Type: Celestion G12T-75W Speaker Configuration: 4 x12 Power (RMS): 280W Selectable Mono/Stereo: Yes Impedance Stereo/Mono: 8 ohm, 16/4 ohm 30"W x 32-3/4"H x 14-1/4"D 82 lbs.